Perez, D. (1999). Enerygy consumers wary of industry monopoly. Manila Bulletin.
Chicago Style aipamenaPerez, Delfin. "Enerygy Consumers Wary of Industry Monopoly." Manila Bulletin 1999.
MLA aipamenaPerez, Delfin. "Enerygy Consumers Wary of Industry Monopoly." Manila Bulletin, 1999.
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